ASTROSAT CZTI

Data Quality Report

Orbit 22958

Creation date: 2024-06-27T18:48:01.199186
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A08_009T01_9000003390_22958cztM0_level2.evt modeM0/AS1A08_009T01_9000003390_22958cztM0_level2_quad_clean.evt
Size (bytes)515,511,36097,344,000
Size491.6 MB 92.8 MB
Events in quadrant A2,992,280647,351
Events in quadrant B3,104,048662,504
Events in quadrant C3,860,430614,712
Events in quadrant D5,225,760581,368

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0130
C0130
D0130

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0129541
B0132421
C0157661
D0198881

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6335160.252565%
B6335410.647198%
C63351332.099448%
D63355658.918706%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7575 6336 0 0 0.00% 0.00%
B 7575 6336 6 6 0.08% 0.09%
C 7575 6336 38 38 0.50% 0.60%
D 7575 6336 551 551 7.27% 8.70%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 13 254 10765 65.13 774 760 153.6
A 13 170 7604 44.55 774 760 153.6
A 0 226 6811 39.39 774 760 153.6
B 4 216 36885 251.01 771 755 143.9
B 0 190 31432 213.13 771 755 143.9
B 12 111 16831 111.69 771 755 143.9
C 0 10 874365 5210.85 726 731 167.7
C 14 238 118775 704.08 726 731 167.7
C 0 239 16003 91.09 726 731 167.7
D 1 52 2211213 12798.37 713 692 172.7
D 13 153 154556 890.83 713 692 172.7
D 13 174 75522 433.25 713 692 172.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter